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I have a project of mine where I need to find out the force that acts on a wheel to start it rolling and keep it rolling so I can then select the correct motor and gear box.

I have not had to do this kind of physics for years and I am having trouble with this problem:

If a wheel is initially at rest then the standard static friction equation would apply (F = u*Normal) initially to find the force to get the wheel moving and then the rolling friction force equation would be used to work out the force required to keep it going?

or

Because it is a wheel the initial and ongoing friction would be determined by using the rolling static friction equation in both cases?

I am really confused here and would really appreciate the help.

Thanks. :)